I need some basics

[bedlam_4]

I've downloaded a couple of fixed .exe's for ghost recon. I've copied the game to both CD-R and CD-RW media discs. I used The hp software and nero burning rom to make the copies. The instructions for no cd play, as well as back-up, direct you to replace the original GHOSTRECON.EXE file with the downloaded fix. In the first instance I tried to drag and drop the fixed .exe over the original. Since that did not work I also right clicked on the original (copied to CD-RW) and tried to delete it. That did not work. So, here is my question in two parts.[list=1][*]How do you replace the original .exe with the fixed .exe?[*]How do you create a temporary directory, access it, and copy files to it?[/list=1]
Pretty ignorant I know but we all start somewhere and this does not fall under the catagory of: knowledge I was born with.
My writer is hp 9100 series